最近一直在开发和学习，mysql 一直好好的。重启了一下机子，运行项目。提示数据库连接不到数据库。于是我尝试，
% mysql.server start 20-08-15 - 17:49:48
Starting MySQL
. ERROR! The server quit without updating PID file (/usr/local/var/mysql/pengdeMacBookPro.local.pid).
rockts@pengdeMacBookPro:/usr/local/var
% brew services start mysql :( 1 20-08-15 - 17:56:57
Service `mysql` already started, use `brew services restart mysql` to restart.
rockts@pengdeMacBookPro:/usr/local/var
% brew services restart mysql 20-08-15 - 17:58:08
Stopping `mysql`... (might take a while)
==> Successfully stopped `mysql` (label: homebrew.mxcl.mysql)
==> Successfully started `mysql` (label: homebrew.mxcl.mysql)
但是链接不到数据库，中间我尝试用 brew 重新安装 mysql，但我没有删除 usr/local/var/mysql 这个文件夹，我怕数据都没有了。
现在改怎么办？
% brew services :( 1 20-08-15 - 18:06:29
Name Status User Plist
dnsmasq started root /Library/LaunchDaemons/homebrew.mxcl.dnsmasq.plist
emacs stopped
httpd stopped
memcached started root /Library/LaunchDaemons/homebrew.mxcl.memcached.plist
mongodb-community stopped
mysql started root /Library/LaunchDaemons/homebrew.mxcl.mysql.plist
nginx stopped
unbound stopped
brew services mysql 好像运行起来了
